I. No person, except a citizen of the United States or non-citizen who is legally authorized to work, shall be employed to sell or deliver any liquor or beverage.
II. No on-premises or off-premises licensee shall consume beverage or liquor while working. No employee, as defined in RSA 275:4, II, shall consume beverage or liquor while working. For the purposes of this paragraph the term "employee" shall not include "dancer" as defined by RSA 179:19, I(a) or "entertainer" as defined by RSA 179:19, I(b).